The Big Idea:Observation and description of changes in the world around us
are the first steps in finding and learning about patterns.
Essential Questions: How can a graphing calculator help me to discover relationships between variables?
Notes from class:Strategy discussed in class: 1.Using the alpha and 2nd key on the graphing calculator.
2.Using the table key to make a table on the graphing calculator.
New vocabulary and words: alpha.
Questions: 1.How does graphing calculators make graphs so fast?
2.Do the lines on the graph go on forever?
Examples from white boared: press the y= key to put the equation for the graph in.
Problem 5.2
A. 1. Use your calculator to make a table for the equation y=3x.
I did this on an online calculator
2. Copy part of the calculator's table onto your paper.
X
Y
0
0
1
3
2
6
3
9
4
12
5
15
6
18
3. Use your table to find y if x=5.
According to the table, if x is 5, y would be 15.
B.1. Use your calculator to make a table for the equation y=0.5x+2.
I did this on an online calculator.
2. Copy part of the calculator's table onto your paper.
X
Y
0
2
1
2.5
2
3
3
3.5
4
4
5
4.5
6
5
3. Use your table to find y if x=5.
According to the table, if x is 5 then y is 4.5.
Problem 5.2 Follow Up
1.Use your calculator to make a graph for the equation y=3x. Describe the graph.
The line in the graph is going straight across the graph in a straight line. It goes through the zero point.
2.Use your calculator to make a graph for the equation y=0.5x+2. Describe the graph.
The line is going straight across from (-10, 10) to (10, 7.5). It is a straight line. It is going across the whole graph.
3. how do the graphs for questions 1 and 2 compare?
The similarities of the graphs are that they are both straight lines. And they go across the graph. But the differences of the graphs is that they have diffrent coordinate pairs. Plus, they don't go parellel to each other.
4.How would you make a graph for the equations y=3x and y=0.5 + 2 without a graphing calculator.
You can make the graph by first getting the data. You can replace each variable with a number. Then you can solve the equation to figure out what the variable y would be. You would keep repeating that process until you have enough data to make the graph. To make the graph, you would put 4 diffrent coordinate graphs together. 2 for negative numbers and 2 for positive numbers. They you would plot the data you got earlier on the graph by looking at the coordinate pairs.
03/10/2009
S.B
The Big Idea:Observation and description of changes in the world around us
are the first steps in finding and learning about patterns.
Essential Questions: How can a graphing calculator help me to discover relationships between variables?
Notes from class: Strategy discussed in class: 1.Using the alpha and 2nd key on the graphing calculator.
2.Using the table key to make a table on the graphing calculator.
New vocabulary and words: alpha.
Questions: 1.How does graphing calculators make graphs so fast?
2.Do the lines on the graph go on forever?
Examples from white boared: press the y= key to put the equation for the graph in.
Problem 5.2
A. 1. Use your calculator to make a table for the equation y=3x.
I did this on an online calculator
2. Copy part of the calculator's table onto your paper.
3. Use your table to find y if x=5.
According to the table, if x is 5, y would be 15.
B.1. Use your calculator to make a table for the equation y=0.5x+2.
I did this on an online calculator.
2. Copy part of the calculator's table onto your paper.
According to the table, if x is 5 then y is 4.5.
Problem 5.2 Follow Up
1.Use your calculator to make a graph for the equation y=3x. Describe the graph.
The line in the graph is going straight across the graph in a straight line. It goes through the zero point.
2.Use your calculator to make a graph for the equation y=0.5x+2. Describe the graph.
The line is going straight across from (-10, 10) to (10, 7.5). It is a straight line. It is going across the whole graph.
3. how do the graphs for questions 1 and 2 compare?
The similarities of the graphs are that they are both straight lines. And they go across the graph. But the differences of the graphs is that they have diffrent coordinate pairs. Plus, they don't go parellel to each other.
4.How would you make a graph for the equations y=3x and y=0.5 + 2 without a graphing calculator.
You can make the graph by first getting the data. You can replace each variable with a number. Then you can solve the equation to figure out what the variable y would be. You would keep repeating that process until you have enough data to make the graph. To make the graph, you would put 4 diffrent coordinate graphs together. 2 for negative numbers and 2 for positive numbers. They you would plot the data you got earlier on the graph by looking at the coordinate pairs.